diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index a7026a7181e..fa8b8713a8f 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -2452,8 +2452,8 @@ instance.web.DateTimeWidget = instance.web.Widget.extend({
     datetime_changed: function() {
         if (this.is_valid_()) {
             this.set_value_from_ui_();
+            this.trigger("datetime_changed");
         }
-        this.trigger("datetime_changed");
     }
 });